{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6d2f8974010f877c7fd48f984278e04571692f5c31bf13cd45e9dcf5ff02adc8",
    "signature": "0xbdd241a5d834fbbbca599342c0402f19c41b3456e321a92d3ea162474617698b6001c4145ef3eb9808086b90a6ba38d4f6af5e268b6513a845c16c281f717a8d1c",
    "signer": "0x599AcAE6Bd3db598aFCa7e4fF9Af46c766a941e9",
    "userId": "708112906"
  }
}